1.14 deduce the electronic configurations of the first 20 elements from their positions in the Periodic Table

Electrons exist around the nucleus of atoms in different energy levels called electron shells. The first shell takes a max of two electrons, the second can take a max of 8, and the third can take a max of 18.

Short hand notation – 

Carbon (C) – 2.4 (2 electrons on the inner shell, 4 electrons on the outer shell = 6 electrons in total) 

Advertisements

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out / Change )

Twitter picture

You are commenting using your Twitter account. Log Out / Change )

Facebook photo

You are commenting using your Facebook account. Log Out / Change )

Google+ photo

You are commenting using your Google+ account. Log Out / Change )

Connecting to %s